/*
 * Licensed to Crate.io GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate licenses
 * this file to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.expression.scalar.geo;

import static io.crate.testing.Asserts.isLiteral;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;

import org.junit.Test;
import org.locationtech.spatial4j.context.jts.JtsSpatialContext;
import org.locationtech.spatial4j.shape.impl.PointImpl;

import io.crate.exceptions.ConversionException;
import io.crate.exceptions.UnsupportedFunctionException;
import io.crate.expression.scalar.ScalarTestCase;
import io.crate.expression.symbol.Literal;
import io.crate.types.DataTypes;

public class DistanceFunctionTest extends ScalarTestCase {

    @Test
    public void testResolveWithTooManyArguments() throws Exception {
        assertThatThrownBy(() ->
                assertNormalize("distance('POINT (10 20)', 'POINT (11 21)', 'foo')", s -> assertThat(s).isNull()))
            .isExactlyInstanceOf(UnsupportedFunctionException.class)
            .hasMessage(
                "Invalid arguments in: distance('POINT (10 20)', 'POINT (11 21)', 'foo') with (text, text, text). Valid types: (geo_point, geo_point)");
    }

    @Test
    public void testResolveWithInvalidType() throws Exception {
        assertThatThrownBy(() ->
                assertNormalize("distance(1, 'POINT (11 21)')", s -> assertThat(s).isNull()))
            .isExactlyInstanceOf(UnsupportedFunctionException.class)
            .hasMessage(
                "Invalid arguments in: distance(1, 'POINT (11 21)') with (integer, text). Valid types: (geo_point, geo_point)");
    }

    @Test
    public void testEvaluateWithTwoGeoPointLiterals() throws Exception {
        assertEvaluate(
            "distance(geopoint, geopoint)",
            144572.67952051832,
            Literal.of(DataTypes.GEO_POINT, new PointImpl(10.04, 28.02, JtsSpatialContext.GEO)),
            Literal.of(
                DataTypes.GEO_POINT,
                DataTypes.GEO_POINT.implicitCast("POINT(10.30 29.3)")
            )
        );
    }

    @Test
    public void testNormalizeWithStringTypes() throws Exception {
        // do not evaluate additional to the normalization as strings are only supported on normalization here
        assertNormalize("distance('POINT (10 20)', 'POINT (11 21)')", isLiteral(152354.3209044634), false);
    }

    @Test
    public void testNormalizeWithDoubleArray() throws Exception {
        assertNormalize("distance([10.0, 20.0], [11.0, 21.0])", isLiteral(152354.3209044634), false);
    }

    @Test
    public void testWithInvalidReferences() {
        assertThatThrownBy(() -> assertEvaluateNull("distance(name, [10.04, 28.02])", Literal.of("foo")))
            .isExactlyInstanceOf(ConversionException.class)
            .hasMessage("Cannot cast value `foo` to type `geo_point`");
    }

    @Test
    public void testWithNullValue() throws Exception {
        assertEvaluateNull(
            "distance(geopoint, geopoint)",
            Literal.of(DataTypes.GEO_POINT, null),
            Literal.of(
                DataTypes.GEO_POINT,
                DataTypes.GEO_POINT.implicitCast("POINT (10 20)")
            )
        );
        assertEvaluateNull(
            "distance(geopoint, geopoint)",
            Literal.of(
                DataTypes.GEO_POINT,
                DataTypes.GEO_POINT.implicitCast("POINT (10 20)")
            ),
            Literal.of(DataTypes.GEO_POINT, null)
        );
    }
}
